E-commerce CSS & Frontend Bug Fixing

A single, well-defined CSS bug starts at $99 (~4h @ $25/hr) with 24-48h turnaround. A batch of bugs, or one deep root-cause with regression hardening, is the $499 Bug-Fix Sprint (~20h @ $25/hr). A storefront broken in production right now uses the Emergency / Retainer tier with an under-4-hour first response and a $2,499 stabilization sprint (~100h @ $25/hr) option. You get a fixed-price quote before any work starts.

On the Emergency tier we reproduce the broken layout in DevTools within four hours of getting access, and most single-bug fixes ship the same day to 48 hours. A simple overflow or z-index clash is often fixed in a few hours; a tangled root-cause across many breakpoints takes longer because we fix the source rather than papering over it with !important.

That sideways scroll on phones is almost always one element wider than the viewport, a fixed width: 600px, a 100vw that ignores the scrollbar, an image with no max-width: 100%, or a long unbroken string. We find the offender in DevTools, clamp it with min-width: 0, max-width: 100% and overflow-wrap: anywhere, then confirm zero horizontal scroll at 320, 375 and 390 px. Yes, this is one of the most common fixes we ship.

It is a stacking-context problem, not just a low z-index. A parent with transform, opacity < 1, filter or will-change creates a new stacking context that traps its children, so your z-index: 99999 still loses. We map the stacking contexts on the page and set a sane z-index scale (header, dropdown, modal, toast) instead of fighting it with bigger and bigger numbers.

Yes. Typical causes: an undefined variable (variable @x is undefined), a missing import path, a bad mixin call, or a nested-& selector that compiles to a doubled ancestor and silently never matches. We fix the source, recompile clean, and, importantly, confirm the rule actually lands in the served CSS, not just the build output.

The new CSS compiled, but a cache is serving the old file. On Magento that is usually a reused var/view_preprocessed directory, a stale pub/static/frontend theme folder, or a CDN that cached the old URL. The fix: wipe pub/static/frontend/<theme> and the matching var/view_preprocessed first, run setup:static-content:deploy -f so it does not reuse the cache, then version-bust the reference if a CDN is in front. We do all of this and verify the new bytes are served.

Yes. Cumulative Layout Shift comes from elements that load without reserved space, images and iframes with no width/height or aspect-ratio, web fonts that reflow text, banners and ads injected above the fold, or late-loading CSS. We reserve space, set font-display sensibly, and ship a before/after Lighthouse CLS reading so you can see the green move toward the < 0.1 target.

Safari and iOS handle a few things differently: 100vh changes as the toolbar shows/hides, flexbox gap needed a fallback on older versions, backdrop-filter needs the -webkit- prefix, sticky positioning and :has() behave differently, and form inputs are styled hard. We reproduce on real iOS Safari (not just a resized desktop window) and add the right fallbacks and prefixes so the page matches Chrome.

Usually yes. After an update, breakage comes from changed markup or class names, a CSS specificity war between the new theme and your overrides, or a dropped/renamed asset. We diff what changed, rebuild your overrides against the new structure, and fix it forward, so you keep the update and your design. Rolling back is the last resort, not the first move.

Staging whenever one exists, we reproduce, fix and QA there, then deploy the verified change to live. If there is no staging, we work safely on live: small, reversible commits, a backup of the touched files, and changes scoped to the broken page. For an Emergency on a live store with no staging, we can spin up a quick local mirror of the frontend to fix without risk.

To start, just the URL of the broken page, a screenshot or screen-recording, and the device/browser it breaks on, we can often diagnose the root cause from that alone. To ship the fix we need access to the theme files (Git, SFTP or admin), or a staging environment. For Magento we also like read access to the CLI so we can run the static-content deploy and cache clears properly.

Yes. We only close a bug after you confirm the before/after on the exact device and browser you reported. If the same bug comes back because of our change, we fix it again at no charge. Every fix is verified across 320-1440 px and five browsers before we send it, and we patch the root cause, not a band-aid that rots on the next deploy. Need ongoing cover? The emergency bug-fixing retainer keeps a frontend on standby.